The Polar Sensor Logger is an application that allows you to log raw biosignals efficiently that can be viewed using your phone or your personal computer. This app allows you to save your files via Google Drive for you to easily share it to any recipients. 

You can log biosignals that includes  the Polar H10, OH1, and Verity Sense. Moreover, this app is flexible because it supports variety of sensor data like the MQTT-Protocol. 

Most importantly, this application has different app permissions that allows or restricts the application from knowing your location, bluetooth set up, file access and many others.